chrono::fea::ChNodeFEAbase Class Referenceabstract
Description
Base class for a generic finite element node that can be stored in ChMesh containers.
Derived classes must implement specialized versions.
#include <ChNodeFEAbase.h>
Inheritance diagram for chrono::fea::ChNodeFEAbase:
Collaboration diagram for chrono::fea::ChNodeFEAbase:
Public Member Functions | |
| virtual void | Relax ()=0 |
| Set the rest position as the actual position. | |
| virtual void | ForceToRest ()=0 |
| Reset to no speed and acceleration. | |
| virtual void | SetFixed (bool fixed)=0 |
| Fix/release this node. More... | |
| virtual bool | IsFixed () const =0 |
| Return true if the node is fixed (i.e., its state variables are not changed by the solver). | |
| virtual void | SetIndex (unsigned int mindex) |
| Sets the global index of the node. | |
| virtual unsigned int | GetIndex () |
| Gets the global index of the node. | |
| virtual void | SetupInitial (ChSystem *system) |
| Initial setup. | |
 Public Member Functions inherited from chrono::ChNodeBase | |
| ChNodeBase (const ChNodeBase &other) | |
| ChNodeBase & | operator= (const ChNodeBase &other) |
| virtual unsigned int | GetNumCoordsPosLevel () const =0 |
| Get the number of degrees of freedom. | |
| virtual unsigned int | GetNumCoordsVelLevel () const |
| Get the number of degrees of freedom, derivative. More... | |
| virtual unsigned int | GetNumCoordsPosLevelActive () const |
| Get the actual number of active degrees of freedom. More... | |
| virtual unsigned int | GetNumCoordsVelLevelActive () const |
| Get the actual number of active degrees of freedom, derivative. More... | |
| virtual bool | IsAllCoordsActive () const |
| Return true if all node DOFs are active (no node variable is fixed). | |
| unsigned int | NodeGetOffsetPosLevel () |
| Get offset in the state vector (position part). | |
| unsigned int | NodeGetOffsetVelLevel () |
| Get offset in the state vector (speed part). | |
| void | NodeSetOffsetPosLevel (const unsigned int moff) |
| Set offset in the state vector (position part). | |
| void | NodeSetOffsetVelLevel (const unsigned int moff) |
| Set offset in the state vector (speed part). | |
| virtual void | NodeIntStateGather (const unsigned int off_x, ChState &x, const unsigned int off_v, ChStateDelta &v, double &T) |
| virtual void | NodeIntStateScatter (const unsigned int off_x, const ChState &x, const unsigned int off_v, const ChStateDelta &v, const double T) |
| virtual void | NodeIntStateGatherAcceleration (const unsigned int off_a, ChStateDelta &a) |
| virtual void | NodeIntStateScatterAcceleration (const unsigned int off_a, const ChStateDelta &a) |
| virtual void | NodeIntStateIncrement (const unsigned int off_x, ChState &x_new, const ChState &x, const unsigned int off_v, const ChStateDelta &Dv) |
| virtual void | NodeIntStateGetIncrement (const unsigned int off_x, const ChState &x_new, const ChState &x, const unsigned int off_v, ChStateDelta &Dv) |
| virtual void | NodeIntLoadResidual_F (const unsigned int off, ChVectorDynamic<> &R, const double c) |
| virtual void | NodeIntLoadResidual_Mv (const unsigned int off, ChVectorDynamic<> &R, const ChVectorDynamic<> &w, const double c) |
| virtual void | NodeIntLoadLumpedMass_Md (const unsigned int off, ChVectorDynamic<> &Md, double &error, const double c) |
| virtual void | NodeIntToDescriptor (const unsigned int off_v, const ChStateDelta &v, const ChVectorDynamic<> &R) |
| virtual void | NodeIntFromDescriptor (const unsigned int off_v, ChStateDelta &v) |
| virtual void | InjectVariables (ChSystemDescriptor &descriptor) |
| Register with the given system descriptor any ChVariable objects associated with this item. | |
| virtual void | VariablesFbReset () |
| Set the 'fb' part (the known term) of the encapsulated ChVariables to zero. | |
| virtual void | VariablesFbLoadForces (double factor=1) |
| Add the current forces (applied to node) into the encapsulated ChVariables. More... | |
| virtual void | VariablesQbLoadSpeed () |
| Initialize the 'qb' part of the ChVariables with the current value of speeds. | |
| virtual void | VariablesFbIncrementMq () |
| Add M*q (masses multiplied current 'qb') to Fb, ex. More... | |
| virtual void | VariablesQbSetSpeed (double step=0) |
| Fetch the item speed (ex. More... | |
| virtual void | VariablesQbIncrementPosition (double step) |
| Increment node positions by the 'qb' part of the ChVariables, multiplied by a 'step' factor. More... | |
| virtual void | ArchiveOut (ChArchiveOut &archive_out) |
| Method to allow serialization of transient data to archives. | |
| virtual void | ArchiveIn (ChArchiveIn &archive_in) |
| Method to allow de-serialization of transient data from archives. | |
Public Attributes | |
| double | m_TotalMass |
| Nodal mass obtained from element mass matrix. | |
Protected Attributes | |
| unsigned int | g_index |
| global node index | |
| Protected Attributes inherited from chrono::ChNodeBase | |
| unsigned int | offset_x |
| offset in vector of state (position part) | |
| unsigned int | offset_w |
| offset in vector of state (speed part) | |
Member Function Documentation
◆ SetFixed()
|
pure virtual |
Fix/release this node.
If fixed, its state variables are not changed by the solver.
Implemented in chrono::fea::ChNodeFEAcurv, chrono::fea::ChNodeFEAxyzDDD, chrono::fea::ChNodeFEAxyzDD, chrono::fea::ChNodeFEAxyzD, chrono::fea::ChNodeFEAxyzrot, chrono::fea::ChNodeFEAxyz, and chrono::fea::ChNodeFEAxyzP.
The documentation for this class was generated from the following file:
- /builds/uwsbel/chrono/src/chrono/fea/ChNodeFEAbase.h
